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Structure and Function of the Snail Statocyst System after a 16-Day Flight on Foton-M-2 (Receptor-F2)
Principal Investigator
Research Area:
Species Studied
Scientific Name: Helix lucorum Species: Snail
Study Type


This study investigated the function of the gravisensing statocyst receptor as a consequence of spaaceflight in the re-adaptation phase after landing. Objectives are to; 1) Determine the regulation of expression of the preproHPep gene (gene that is expressed in the primary statocyst receptor cells) as a consequence of space flight and during the re-adaptation to Earth’s gravity. Regulation of this gene might signal how the statocyst receptor is “tuned” by the gravity vector; 2) Specify the changes in excitability of the gravireceptors of the statocyst organ during the readaptation period following space flight; 3) Investigate the potential changes in intersensory interaction between the photosensory and olfactory pathways and the statocyst receptors; 4) Determine the mechanical and electrical excitability of the statocyst receptor during the readaptation period; and, 5) Measure the changes in the internal Ca2+ concentration in the statocyst receptors in response to mechanical stimulation.

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Ilyin EA, Tairbekov MG, Vasques MF, Skidmore MG. Foton-M2 Russian/US Biology Experiments, Development, Implementation, and Operations. Journal of Gravitational Physiology 2006 Jul;13(1):177-180

Data Information
Data Availability
Archiving in progress. Data is not yet available for this experiment.

Mission/Study Information
Mission Launch/Start Date Landing/End Date Duration
Foton-M2 06/20/2005 07/05/2005 16 days

Additional Information
Managing NASA Center
Ames Research Center (ARC)
Responsible NASA Representative
Ames Research Center LSDA Level 3
Project Manager: Sylvain Costes
Institutional Support
National Aeronautics and Space Administration (NASA)
Protocol / Approach
Delayed synchronous control